Russia
Nicholas I copper Proof Novodel 1/2 Kopeck 1840 PR65 Brown NGC, St. Petersburg mint, Bit-H940 (R3). Variety with plain edge and no mintmark. Obv. Crowned monogram of Nicholas I. Rev. Date and value. Fully proof fields with a bold strike. Only tiny marks are apparent, with brownish patina and golden highlights. Very rare.
HID02901242017
Estimate: 1500-2000 USD